Average electron radii in many-electron atoms

Many- Electron Harmonium Atoms

Many-electron tunneling in atoms

A theoretical derivation is given for the formula describing N -electron ionization of atom by a dc field and laser radiation in tunneling regime. Numerical examples are presented for noble gases atoms. PACS numbers: 32.80.Fb, 87.64.Lg.

Relaxation effect and radiative corrections in many-electron atoms

We illuminate the importance of a self-consistent many-body treatment in calculations of vacuum polarization corrections to the energies of atomic orbitals in many-electron atoms. Including vacuum polarization in the atomic Hamiltonian causes a readjustment (relaxation) of the electrostatic self-consistent field. The induced change in the electrostatic energies is substantial for states with th...

Breit Interaction and Parity Non-conservation in Many-Electron Atoms

We present accurate ab initio non-perturbative calculations of the Breit correction to the parity non-conserving (PNC) amplitudes of the 6s−7s and 6s−5d3/2 transitions in Cs, 7s−8s and 7s−6d3/2 transitions in Fr, 6s − 5d3/2 transition in Ba , 7s − 6d3/2 transition in Ra , and 6p1/2 − 6p3/2 transition in Tl. The results for the 6s− 7s transition in Cs and 7s− 8s transition in Fr are in good agre...

Many Electron Atoms: Ionization Energies of Transition Elements

The paper introduces a theoretical model aimed to calculate the ionization energies of many electron atoms and their ions. The validity of the model, which implements the statistical formulation of the quantum uncertainty to infer a simple formula of ionization energy, has been already proven in a previous paper comparing systematically experimental and calculated values for elements with atomi...